“Hang on to your feather duster, because things are about to get crazy.” That’s the advice Adrian gives Carmen in a promo video for the upcoming installment of “Devious Maids.” And he’s right — the chaos will get kicked up a notch as Season 4 of the Lifetime series winds down. With only two episodes left, fans can expect their favorite maids to sweep up even more drama as Rosie (Dania Ramirez) gets closer to solving Peri’s (Mariana Klaveno) murder case.